you may have all the info by now but Minnie Eathorne was the sister of my great grandfather Alexander, they were a family of 7 children and their parents were called John Eathorne and Charity Penaluna. They lived at Wendron nr Helston in Cornwall UK and were all in the mining trade. Minnie left for USA when her husband went to mine there. I have her date of Birth as 1869 but I may be out on that. The Eathorne family are still strong in Cornwall. I have recently moved to Scotland where I discovered to my suprise that a great great uncle moved to just 20 miles away from me in the late 1800's.
If this is relevant to your tree, I have a litle more info. just get in touch with me. firstname.lastname@example.org
good luck with your search. would be nice to hear from you...especially if we are related down the line somewhere.